Computer · Surveying
A tacheometer was set up at a station and readings were taken on two points at distances of 100 m and 150 m, yielding staff intercepts of 3.98 m and 5.98 m, respectively. If an externally focusing tacheometer is used, which of the following sets of values satisfies the tacheometric distance equation for the focal length (f), stadia interval (i), and distance (d) between the objective and the vertical axis?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1f = 0.2 m, i = 12 mm, d = 30 cm
- 2f = 0.3 m, i = 0.12 mm, d = 20 cm
- 3f = 0.3 m, i = 1.2 mm, d = 20 cm
- 4f = 0.3 m, i = 12 mm, d = 20 cm✓
Correct answer
f = 0.3 m, i = 12 mm, d = 20 cm
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